AIPMT | 2015Momentum and CollisionHard
Question
Two particles of masses m1, m2 move with initial velociteis u1 and u2. On collision, one of the particles get excited to higher level, after abosrbing energy e. If final velocities of particles be v1 and v2 then we must have :
Options
A.
m1u12 + 
m2u22 = 
m1v12 + 
m2v22 - ε
m1u12 + m2u22 = m1v12 + m2v22 - εB. m1u12 + m2u22 - ε = m1v12 + m2v22
m1u12 + m2u22 - ε = m1v12 + m2v22 C. m12u12 + m22u22 + ε = m12v12 + m22v22
m12u12 + m22u22 + ε = m12v12 + m22v22 D.m12u1 + m22u2 - ε = m12v1 + m22v2
Solution
Energy will always be conserved so
K. E.initial = K.E.final + Excitation energy
m1u12 + 
m2u22 = 
m1v12 + 
m2v22 + ε
Hence option (2) .
K. E.initial = K.E.final + Excitation energy
m1u12 + m2u22 = m1v12 + m2v22 + εHence option (2) .
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